Seiko Cal. 4439 - 637

The Seiko 4439-637 represents an important milestone in Seiko's 1972 lineup. With its 21mm lug width and 14.2mm profile, it sits comfortably on most wrists. [seikata-wm-a9681937920d]

Also known as: Panda, UFO

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Champagne

Jewels

17j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1972

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